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The MPU-6050 is a six-axis motion sensor (IMU, Inertial Measurement Unit) produced by InvenSense (now part of TDK). It combines a three-axis accelerometer (Accelerometer) and a three-axis gyroscope (Gyroscope), capable of measuring both acceleration and angular velocity. The MPU-6050 is commonly used in a variety of applications such as attitude control, motion tracking, gesture recognition, aircraft control, robotic navigation, etc. Technical Specifications: Operating voltage: 2.3V to 3.4V (typical 3.3V). Interface: I2C (standard 400 kHz) or SPI (max 10 MHz). Built-in filter: Integrated digital low-pass filter to reduce noise and improve data quality. Temperature sensor: Temperature measurement in the range of -40°C to 85°C. Main features: Three-axis accelerometer: It has a three-axis accelerometer that can measure acceleration in the X, Y, and Z axes. Measurement range: ±2g, ±4g, ±8g, ±16g (the range can be selected by setting). Three-axis gyroscope: It has a three-axis gyroscope that measures the angular velocity in the X, Y, and Z axes. Measurement range: ±250°/s, ±500°/s, ±1000°/s, ±2000°/s (the range can be selected by setting). Digital output: The MPU-6050 provides digital output and uses an I2C or SPI interface to communicate with a host controller (such as Arduino, Raspberry Pi, ESP32, etc.). Built-in temperature sensor: The MPU-6050 also has an internal temperature sensor integrated to measure the temperature of the chip. DMP (Digital Motion Processor): The MPU-6050 has a built-in digital motion processor (DMP), which can process a large amount of sensor data and reduce the computing burden of the main processor. The DMP can be used to perform complex computing tasks, such as the fusion of accelerometer and gyroscope data to calculate the device's attitude and direction. Power management: The MPU-6050 supports low-power modes, suitable for battery-powered applications such as wearable devices, drones, mobile devices, etc. The power mode of the chip can be controlled through the I2C bus to select sleep mode or working mode. Application areas: Motion tracking: used in wearable devices, smart watches, fitness trackers, etc. to help record user motion data. Posture control: used in drones, robots, aircraft models, etc. to ensure balance and stability by real-time monitoring and adjustment of posture. Navigation system: MPU-6050 can be used in combination with GPS for navigation of robots, autonomous driving and drones. Augmented reality (AR) and virtual reality (VR): used to sense head movement, posture and direction changes to enhance user experience. Gesture recognition: used in smart homes, game controllers, air gesture recognition, etc. TPS51200DRCR PDF Datasheet TPS51200DRCR Datasheet

If ATTiny85 is locked, it is usually because programming protection (such as write protection) is enabled. How can we recover it. First, let's understand the structure of ATTiny85 ATtiny85 is a small 8-bit AVR microcontroller produced by Atmel (now Microchip Technology), widely used in embedded systems and low-power projects. ATtiny85 has 8 KB of flash memory, 512 bytes of SRAM, and 6 programmable I/O pins. For more details, please check the official attiny85 datasheet If the ATTiny85 is locked, to recover it, you can try the following steps: Use the correct programmer: Make sure the programmer you use (such as USBasp or AVRISP mkII) supports ATTiny85 and the driver is installed correctly. Try the unlock command: Use the programming software (such as AVRdude) to send the unlock command. You can try the following command: avrdude -c usbasp -p t85 -B1 -e Where -e means erase the entire chip, which may clear the locked state. Check the wiring: Make sure the wiring between the programmer and the ATTiny85 is correct, including MISO, MOSI, SCK, RESET and GND. Change the frequency: Sometimes, the programmer's clock frequency is not set correctly, which may cause communication failure. Try using a lower frequency. If the above method does not work, you may need to reburn the bootloader or use a dedicated unlocking tool. Reburn the bootloader: Attiny85 programming with arduino Hardware connection: Use Arduino UNO or other compatible Arduino board as a programmer. Connect the ATtiny85 to the Arduino, usually using the 6-pin or 10-pin programming interface. Install Arduino IDE: Make sure to install the latest version of Arduino IDE. Add ATtiny85 support: In Arduino IDE, open "File" > "Preferences". In "Additional Development Board URLs", add the following URL: http://digistump.com/package_digistump_index.json Go to "Tools" > "Development Board" > "Development Board Manager", search and install "Digistump AVR Boards". Select the board and chip: Select "ATtiny85" as the target board in the Tools menu and set the relevant options, such as the clock frequency (usually 8 MHz or 16 MHz). Write code: Write Arduino code (C/C++) to use the ATtiny85's pins to control sensors, LEDs or other peripherals. Upload code: In the Arduino IDE, select "Arduino as ISP" as the programmer and click Upload code. Attiny85 Program and Burn Bootloader using Arduino ATtiny85 Project Example LED flashing: void setup() { pinMode(0, OUTPUT); // Set pin 0 as output } void loop() { digitalWrite(0, HIGH); // Turn on LED delay(1000); // Delay 1 second digitalWrite(0, LOW); // Turn off LED delay(1000); // Delay 1 second } Temperature sensor reading: Use ATtiny85 to connect a temperature sensor (such as LM35), read analog values and control a fan or other device through PWM. Attiny85 Program and Burn Bootloader using Arduino ATtiny85 is a powerful and flexible microcontroller that can be used with the Arduino platform to easily implement a variety of projects. Whether it is simple LED control or complex sensor integration, ATtiny85 can do it, especially suitable for low-power and space-constrained application scenarios. Order ATtiny85 Series Microcontrollers

STM32F407VET6开发板 介绍 STM32F407VET6是意法半导体STM32F4系列微控制器中的一款芯片，基于高性能ARM Cortex-M4处理器内核，主频高达168MHz，广泛应用于工业控制、消费电子、物联网设备等需要高性能和丰富外设的嵌入式系统。 1. 核心功能 CPU核心：ARM Cortex-M4 32位RISC处理器，支持DSP指令集，集成单精度浮点单元（FPU），加速浮点计算。 主频：高达168MHz工作频率。 Flash容量：512 KB片上Flash存储器，用于存储程序代码。 SRAM：112 KB 片上 SRAM，分为 3 个块（2×64 KB 和 1×16 KB）。 2. 外设和接口 STM32F407VET6具有丰富的外设和接口，适用于各种应用场景： GPIO：144 个引脚中的 82 个可用于通用 I/O（GPIO）。 ADC：3个12位ADC，最多可连接24个通道。 DAC：2个12位DAC，适合模拟信号生成。 定时器：14个通用定时器及高级定时器，支持PWM、捕获比较功能等。 通讯接口： 3个SPI接口 4 个 I2C 接口 3 个 USART 和 2 个 UART 2个CAN总线接口 1个USB 2.0 OTG全速/高速接口 1个以太网MAC，支持IEEE 1588精确时间协议 SDIO接口：支持高速访问SD卡。 3. 时钟和电源 时钟系统：支持外部4~26MHz高速晶振和内部16MHzRC振荡器，提供高达168MHz的系统时钟频率。 低功耗模式：支持多种低功耗模式（休眠、停止、待机），适合节能应用。 工作电压：2.7V至3.6V电源电压范围。 4. DMA 和内存接口 DMA：12个独立的DMA通道，支持内存到内存、外设到内存、内存到外设的数据传输。 FSMC：灵活的静态存储器控制器，支持与外部存储器（如SRAM、NOR Flash、LCD控制器）的接口。 5. 开发生态系统 开发工具： STM32CubeMX：用于生成初始化代码的图形配置工具。 STM32CubeIDE：官方推荐的集成开发环境，支持全系列STM32系列芯片的开发。 支持第三方IDE，如Keil和IAR Embedded Workbench。 固件库： ST提供完整的STM32CubeF4固件库，帮助用户快速使用外设和接口。 6. 应用领域 工业自动化：高性能 MCU 能够处理复杂的实时控制任务。 物联网设备：丰富的通信接口和低功耗模式使其适合物联网应用。 音频处理：浮点单元和 DSP 指令集适用于信号处理和音频应用。 消费电子：常用于家用电器、娱乐设备等。 7. 包装 STM32F407VET6 采用 LQFP100 封装，有 100 个引脚。 总体而言，STM32F407VET6 是一款高性能、功能丰富的微控制器，适用于各种复杂的嵌入式系统应用。 编程 STM32F407VET6 板 STM32F407VET6 视频 STM32F407V 开发板在 Arduino IDE 上轻松编程 要对 STM32F407VET6 进行编程，您可以按照以下步骤操作： 1. 开发环境设置 1.1 安装IDE ST官方推荐的IDE是STM32CubeIDE，它是基于Eclipse的集成开发环境，支持STM32系列芯片编程。 1.2 安装固件库 使用STM32CubeMX生成初始化代码。STM32CubeMX是一个图形化配置工具，可以帮助您配置外设、时钟等。 1.3 安装其他工具 如果使用第三方IDE，比如Keil或者IAR Embedded Workbench，也需要安装对应的IDE，通过ST官方提供的固件库进行开发。 2. 硬件连接 2.1 连接调试器 为了将程序下载到STM32F407VET6芯片，需要使用调试器，例如ST-Link或J-Link，并按如下方式连接： 使用 SWD（串行线调试）接口通过两根线（SWDIO 和 SWCLK）连接调试器。 电源（VCC）和接地（GND）连接。 在某些情况下，可能需要复位线（NRST），但这不是必需的。 2.2 安装ST-Link驱动 如果使用ST-Link，则需要安装相应的驱动。 3. 生成代码 3.1 使用 STM32CubeMX 生成代码 打开STM32CubeMX，选择STM32F407VET6作为目标芯片。 配置时钟、GPIO和外设（如UART、I2C、SPI等）。 生成代码并选择相应的IDE作为开发环境（STM32CubeIDE、Keil、IAR等）。 4. 撰写申请 基于生成的代码，您可以在main.c文件中编写自己的应用程序代码。STM32CubeMX会自动生成外设初始化代码，用户只需在main()函数中添加应用程序逻辑即可。 5.编译并下载程序 5.1 编译代码 在STM32CubeIDE或其他IDE中，点击“Build”或“Compile”按钮编译代码，编译完成后会生成.hex或.bin文件。 5.2 下载代码到STM32 将调试器连接到 STM32F407VET6 板。 点击IDE中的“Download”或者“Flash”按钮，程序就会下载到开发板中。 6. 调试 使用IDE的调试工具，可以实时监视变量，设置断点，单步调试等，帮助分析和调试代码。 7.常见问题 7.1 无法连接目标板 确认ST-Link驱动程序已正确安装。 检查 SWD 电缆是否连接正确。 检查目标板是否正确上电。 7.2 程序无法正常运行 检查时钟配置是否正确。 确保使用STM32CubeMX生成的初始化代码是正确的。 这些步骤可以帮助您开始对 STM32F407VET6 进行编程 获取 STM32F407VET6 开发板